There is a lot of criticsm and debate over whether bitcoins will ultomately fail because of its deflationary nature.
I don't want to debate if that's the case or not and I also understand that the goal of bitcoin was to have a fixed amount of coins so that there is no risk of (hyper)inflation.
What I'm wondering is, would it be technically possible for a crypto currency to have a fixed target inflation rate? For example the european central bank has a target inflation rate of 2% (I think) which is supposed to stimulate growth while at the same time avoiding over-inflation.
So I guess my question boils down to: Why are all popular crypto currencies deflationary? Is it a technical problem that cannot be solved or is there another reason it was designed like this?